Interstate 15 has partially reopened after both sides of the freeway were closed due to a big rig that overturned and spilled a hazardous chemical, the California Highway Patrol said.
The accident was reported shortly before 6:30 a.m. Friday.
As of 1 p.m., one lane had reopened on each side of the freeway.
The CHP says it's not known when all lanes will reopen, but drivers should expect long delays.
For current road conditions, call 1-800-427-ROAD(7623) or visit www.dot.ca.gov.